Henning pneumatic malting drum



(No Model.) Y v 4Sheets-Sheet 1.

F. B. GIBSLER 8v H. SMITH. PNBUMATIG MALTING DRUM.

No. 476,997. Patented June 14, 1892.

Www@ "E (No Model.) 4 Sheets-Sheet 2.

F. B. GIESLBR & H. SMITH. PNBUMATIG MALTING DRUM.

No. 476,997. Patented June 14, 1892.

(N0 Model.) 4 Sheets-Sheet 3.

F. B. GIESLBR 8s H. SMITH. PNEUMATIG MALTING DRUM.

No. 476,997. Patented June 14, 1892.

(No Model.) 4 Sheets-Sheet 4.

F. B. GIESLER 8v H. SMITH. PNBUMATIG MALTING DRUM.

190.476,99?. PatentedJune 14, 1892.

4UNITED STATES PATENT OEEICE.

FRANKLIN B. GIESLER AND HENRY SMITH, OF MILWAUKEE, WISCONSIN, ASSIGNORSTO'THE GALLAND-HENNING PNEUMATIC MALTING DRUM MANUFACTURING COMPANY, OFSAME PLACE.

PNEUMATICI` MALTINGDRUIVI.

SPECIFICATION forming part of Letters Patent No. 476,99*?, dated J' une14, 1892.

Application filed .Tuly 15,1891. Serial No. 399,574. (No model.)

is a full, clear, and exact description'thereof.

Our invention relates to pneumatic malting-drums; and it consistsincertain peculiarities of construction and combination of parts, as willbe fully set forth hereinafter and subsequently claimed. H

In the drawings, Figure l is a vertical longitudinal section through oneof our improved dcvices on the line l l of Fig. Fig. 2 is a detailsectional view on the line 22 of Fig. 3. Fig. 3 is an end elevation ofthe said drum, partly in section, on the line 3 3 of Fig. 1. Fig. 4 is asectional elevation on the line et it of Fig. l. Fig. 5 is a plan viewof the drum supporting and rotating mechanism, partly in section toillustrate details of construction. Figs. 6 and 7 are enlarged sectionalviews illustrating` details of construction,and Fig. S is an enlargeddetail View of an air-gage used with our device. Fig. 9 is asideelevation of one of our drums. Fig. 10 is asection on line lO l0 ofFig. 9. Fig. 1l is a detail.

A represents a slowly revolving drum in which grain, after having beensteeped, is placed for malting. This drum is formed with outer and innerheads at each end, having spaces between each pair of heads, asbestshown in Fig. l. Said heads are formed of rings B C, with annularflanges b D and c c', respectively, projecting inwardly therefrom, theannular flange b having an annular plate B', forming with said flange b,to which it is secured, the outer head at one end, the central openingof said plate being provided with or surrounded by a ring Bintegral withsaid plate B and projecting on each side thereof. This plate B isprovided on its outer surface with radially-disposed strengthening-ribsh2, between which are arranged an annular row of hand-holes h3, bridgedby spiders h4, through which pass screw-bolts b5, whose inner ends aresecured to closing-plates Z2, secured in place by hand-nuts Zf" on theouter Yends of said bolts h5. The annular flange b has an annular plateB3 secured thereto, forming the inner head of the drum A at this end.The other end of the drum is somewhat similarly constructed, there beingannular plate C', secured to the outer flange c of the ring C, forming`the outer head of the drumA at this end, which plate C `has auoutWardly-projectng ring C2 (of less diameter than the ring B2 named)surrounding its central opening; but the plate C3, which is secured tothe flange c of the ring C and which forms theinner head of the drumatthis end, has no central opening. The plate C at this end of the drum isprovided with radially-disposed strengthening-ribs c2 on its outersurface, and has an annular row of hand-holes c3, with spiders c4,screw-bolts c5, closing-plates c6, and hand-nuts c7, corresponding tothe similar devices on the other end of the drum, except that the row ofhand-holes c3 are nearer the center of the drum than the hand-holes b3referred to.

The interior periphery of the drum is provided with a series ofperforated semi-cylinders D D, extending between the inner flanges b cof the rings B C and secured thereto by angular strips d3 d3, whichlianges have correspondingly-shaped openings hs cg, so that the saidsen1i-cylinders D are open at each end into the spacese e between thedouble heads at each end of the drum A, the outer flanges h c of therings B C of said double heads being provided with semicircular openingsor hand-holes (l, in register with the semi-cylinders D for ready accessthereto, said hand-holes d being provided with pivot-ed covers d', keptin place by any suitable securing devices,. such as screw-bolts on theflanges h c, engaging with hooks or lips on the covers d', andthumb-nuts on said screwbolts, all as shown at d2. The annular plates B3C3, forming part of the inner heads of the drum A, are each providedwith a circular row of openings f2 e2, respectively, the said 95openings being covered with perforated plates f3 e3, respectively, thecovered openings e2 e3 in plate C3 being in line with the hand-holes c3in the outer head at that end of the drum and nearer the center thereofthan the cov- ICJO trl

ered openings f2 f2 in plate B2, which are in line `with the hand-holesb2 in the outer head at the other end of the drum.

E is a central perforated cylinder extending from the plate C3 of theinner head at one end of the drum, longitudinally through the latter tothe annular plate B3 at the other end thereof in line with the describedring B2 at said end, being secured to said heads by suitableangle-strips e4 f4 and bolts, as shown, said bolts at one end alsopassing through a flange on the ring B2, as shown in Fig. 2.

F is a chamber communicating with the passage through ring B2 fromcylinder E, and the inner flanged endfof this chamber F is provided With a stout rubber packing-ringfl, bent so that one edge bears againstthe ring B2, while the other edge bears against the flanged endf, towhich it is secured by a ring f' and bolts, all as shown in Fig. 7. Theouter end of this chamber F is closed by a door F', hinged to saidchamber, as shown at f5, and secured When closed by catch f6, all asbest shown in Fig. G.

G G represent suitable beds or bases, from which rise bearings g g forcross-shafts G' G', (which shafts may be made in sections with couplingsg', if desirable,) said shafts having fast on them Worm-Wheels G2 andpulleys g2 g2, which latter support the drums A and revolve the saine byfrictional contact therewith, when the said shafts G' are themselveshereinafter explained.

H is a shaft extending transversely beneath one end of cach drum A, thepreferred arrangement being that several of these drums are arranged intransverse line with each other and with the said shaft H extending in aline beneath one end of all of them. Beneath each drum the shaft Hcarries a sleeve H', loose thereon, in bearings 7L h, said sleeve H'terminating at each end in a Worm H2, one end of this Worin-sleeve ll'being formed with clutch-notches 7L'.

I is a clutch-collar movably secured to the shaft H by a groove andfeather t', and having clutch-pins t" at one end for engagement at theproper time with the notches 7L' in the end of the sleeve H', andhaving, also, a circumferential groove 122 for engagement with theshifting-lever J, pivoted, as shown at j, to the base G.

K represents a tunnel, duct, or passage leading from the source orreservoir of the moist purified air which is to be drawn through thedrums A and the grain or malt in them contained, and K' is a pipe orpassage leading from the passage K to a chamber L, Which communicateswith the passage or opening formed by the ring C2 at the adjacent end ofthe drum A, the connection between the chamber L and ring C2 beingidenticalin construction With that already described between the chamberF and ring B2, and illustrated best in Fig. 7, and the outer end of thechamber L is closed by a door L', identical in construction andarrangement With the door F' of chamber F, already described, andillustrated best in Fig. 6.

M' is a pipe or passage leading from the bottom of the chamber F of eachdrum to a tunnel, duet,'or passage M, which latter communicates with asuction-fan, (not shoWn,) so

that the air maybe thereby drawn through the drums and their contents,as already stated.

N is a damper in the pipe or passage M', one journal n of which damperprojects through the Wall of the pipe M' and carries on the outside apointer or index-linger O, there being a scale O' on the outside of saidpipe M'. The shank P of lthis pointer O is provided with an arc-shapedslot p, through which projects a screw-bolt Q, With a thumbnut q thereonto set the damper N to.any desired position to which it has been turnedby the handle p' of the said pointer O, whereby the flow of air throughthe said pipe or passage 1 M' may be regulated.

In our improved drum the moist purified l air from the duct or passage Kis drawn y through pipe K' and chamber L into the space e' at theadjacent end of the drum A through the opening of the ring C2, said airfirst striking against the imperforated central part of the plate C2,forminga part of the inner head at this end of the drum, and beingthence deflected to the open ends of the semi-cylinders revolved throughtheir said Worm-wheels, as

D D, surrounding the inner periphery of the I drum and passingtherethrough to the space e at the other end of the drum, a portion of lsaid air entering the end of the drum through the perforated plates e2and more of it passing into the interior through the perforations 1n thesaid semi-cylinders D, and that portion reaching the space e beingsucked into the interior through the perforated plates f2 in theadjacent inner drum-head, and from all these points being drawn throughthe grain or malt in the slowly-revolving drum into the centralperforated cylinder E, and out through the passage Within the ring B2into chamber F, pipe M', and duct or passage M to the aforesaidsuction-fan. (Not shown.)

In the operation of our drums it happens from time to time that theperforated plates @2]2 become clogged, and to remedy this the openingsc2 b2 are provided, which permit the entrance of the operators arm orhand to clean the same and which when not in use are closed, asdescribed, and similarly when access to the semi-cylinders D D isdesired. This is obtained through the hand-holes d in the flanges b c ofthe rings B C of the drumheads, Which hand-holes when not in use areclosed by the doors d', as described, and the doors F' L afford readyand convenient means of access to the chambers F L. Hence the interiorof our improved drums is always easily accessible to the operator. Whenfor IOO IIO

'any reason it is desired to stop the rotation of any particular drum Awithout stopping the shaft I-I, this can be instantly done by thedescribed shifting-lever J, and by a movement of said lever and theclutch-collar I in the opposite direction the revolution of said druincan be as quickly again started.

In Figs. 9, l0, and ll are shown the feedepenings and their closingdevices used with our improved drums. We prefer to have two of theseopenings R R, one adjacent to each end of the drum, said openings beingeach surrounded by a collar r, shaped to tit the periphery of the drumto which it is riveted, from which collar there rises an annular flanger', the latter rising to a uniform height.

R is a door resting on the flange t" and having a lug/Wat one sidefitting over a screwbolt r3, which forms the pivot of the door, athumb-nut r4 securing the door in place, and said door having a catch T5at its opposite side for engagement with another screw-bolt r6, a thurnb-nut ri on said screw-bolt serving to securely fasten the said doorwhen it is closed, so that it will not become loosened by the rotationof the drum.

S S represent the preferred form of doors for closing thedumping-openings in our vats, said doors operating in slides 3 s andhaving suitable fastening devices; but the peculiar construction thereofforms no part of our present invention.

In practice we have found it most convenient to arrange thefeed-openings R one adjacent to each end of the drum,as stated,and havefound that by reason of the described collar rising to a uniform heightgrain can be better fed into these openings than if they were simplyflush with the circumference of the drum, and as th ey do notrequirefrequent open-A ing we prefer to closethem by the pivoted doorsdescribed, which forin a very secure lock when the thumb-nut r1 isscrewed to place on each door; but for the ready dumping of the contentsof the drum we prefer sliding doors at the dumping-openings, which weplace in a line intermediate of the feed-openings, and preferably in thecentral circumferential line of the drum, so that said dumping-openingswill be entirely removed from proximity to the revolving and supportingmechanism adjacent to the drum ends, and hence more accessible frombeneath, while the feed-openings, being adjacent to the ends of saiddrum, are more accessible from above in these locations.

lzlaving thus described our invention, what we claim as new, and desireto secure by Letters Patent, is-

1. In a malting-drum, the combination, with the outer and inner heads ateach end separated by spaces and having central openings in the outerheads, one of said inner heads having an imperforate center and theother having a central opening, of peripherally-arranged open-endedperforated semi-cylinders between said inner heads, a perforated een-.

tral cylinder extending from the imperforate center of one of said innerheads to the central opening in the other of said inner heads, annularrows of openings in each of said inner heads, perforated plates coveringsaid openings, annular rows of openings in the outer heads, registeringwith the said annular rows of openings in the inner heads and with thesaid semi-cylinders, and closing devices for said openings in the outerheads, substantially as set forth.

2. The combination, with a rotating malting-drum, ofshafts formed insections and connected together, arranged longitudinally beneath saiddrum and carrying pulleys on which said drum rests and by which it is rotated, and worm-wheels fast on said shafts, another shaft arrangedtransversely beneath said drum and beneath said longitudinallyarrangedshafts, a sleeve loose on said transverse shaft and terminating in wormsat each end and having clutch-notches at one end, alongitudinally-movable clutch-collar secured to said transverse shaftand having clutchpins at one end, and a shifting-lever vin engagementwith said clutch collar, substantially as set forth. A

3. In a `lnalting-druni, a cylinder having feed-openings in itsperiphery, one near each end thereof and each surrounded by a collarshaped to fitand secured to the said periphery, said collar having anannular iange rising to a uniform height and provided with a iiatpivoted door, and dumping openings arranged in a line intermediate ofthe lines of the feed-openings and provided with sliding doors,substantially as set forth.

In testimony that we claim the foregoing we have hereunto set our hands,at Milwaukee, in the county of Milwaukee and State of Wisconsin, in thepresence of two witnesses.

FRANKLIN B. GIESLER.

HENRY SMITH.

Witnesses:

H. G. UNDEnWooD, NIE. OLIrI-IANT.

IOO

